7.12 TC-VDI functions

This library contains a multitude of functions to manage true color on the MATRIX graphic boards. In all, the following routines are available in TC-VDI 0.7:

• vq_calibrate	Tests colour calibration
• vq_colors	Gets a palette sequence
• vq_pixcol	Gets pixel
• vq_pixrgb	Gets pixel rgb color
• vrf_rgb	Gets fill color values
• vrl_rgb	Gets line color values
• vrt_rgb	Gets text color values
• vrun_parallel	Parallelogram color runs
• vrun_rect	Rectangle color runs
• vrun_triangle	Triangle color runs
• vs_calibrate	Sets colour calibration
• vs_colors	Sets a palette sequence
• vs_pixcol	Sets pixel through soft palette
• vs_pixrgb	Sets pixel rgb color
• vsf_rgb	Sets fill color values
• vsl_rgb	Sets line color values
• vst_rgb	Sets text color values

7.12.1 vq_colors

Name:	»Inquire colors« - Obtain the RGB values of a colour palette.
Opcode:	65
Syntax:	void vq_colors ( int16_t handle, int16_t from, int16_t to, int16_t set_flag, int16_t *rgb_table );
Description:	The call vq_colors obtains the RGB values starting from the colour index from to the colour index to. The resulting values are stored in rgb_table.
Return value:	The function does not return a result.
Availability:	Available only with MATRIX drivers in TC mode.
Group:	TC-VDI functions
See also:	Binding vs_colors

7.12.2 Bindings for vq_colors

void vq_colors ( int16_t handle, int16_t from, int16t_to, int16_t set_flag, int16_t *rgb_table );

Binding:

void vq_colors (int16_t handle, int16_t from, int16_t to, int16_t set_flag,
                int16_t *rgb_table)
{
   intin[0]    = from;
   intin[1]    = to;
   intin[2]    = set_flag;
   intin[3..4] = rgb_table;

   contrl[0] = 65;
   contrl[1] = 0;
   contrl[3] = 5;
   contrl[6] = handle;

   vdi ();
}

GEM-Arrays:

Address	Element	Contents
contrl	contrl[0]	65 # Function Opcode
contrl+2	contrl[1]	0 # Entry in ptsin
contrl+4	contrl[2]	0 # Entry in ptsout
contrl+6	contrl[3]	5 # Entry in intin
contrl+8	contrl[4]	0 # Entry in intout
contrl+12	contrl[6]	handle
intin	intin[0]	from
intin+2	intin[1]	to
intin+4	intin[2]	set_flag
intin+6	intin[3..4]	rgb_table

7.12.3 vq_pixcol

Name:

»Inquire pixel colour index« - Obtain the index of a pixel.

Opcode:

Syntax:

void vq_pixcol ( int16_t handle, int16_t x, int16_t y, int16_t *phys_ix, int16_t *vdi_ix );

Description:

The call vq_pixcol obtains the physical and VDI indexes of the pixel at the given coordinates. The following apply:

Parameter	Meaning

handle	Workstation identifier
x	X-coordinate
y	Y-coordinate
phys_ix	Color index
vdi_ix	VDI color index

Return value:

The function does not return a result.

Availability:

Available only with MATRIX drivers in TC mode.

Group:

TC-VDI functions

See also:

Binding vs_pixcol

7.12.4 Bindings for vq_pixcol

void vq_pixcol ( int16_t handle, int16_t x, int16t_y, int16_t *phys_ix, int16_t *vdi_ix );

Binding:

void vq_pixcol (int16_t handle, int16_t x, int16_t y, int16_t *phys_ix, int16_t *vdi_ix)
{
   ptsin[0] = x;
   ptsin[1] = y;

   contrl[0] = 58;
   contrl[1] = 1;
   contrl[3] = 0;
   contrl[6] = handle;

   vdi ();

   *phys_ix = intout[0];
   *vdi_ix  = intout[1];
}

GEM-Arrays:

Address	Element	Contents
contrl	contrl[0]	58 # Function Opcode
contrl+2	contrl[1]	1 # Entry in ptsin
contrl+4	contrl[2]	0 # Entry in ptsout
contrl+6	contrl[3]	0 # Entry in intin
contrl+8	contrl[4]	2 # Entry in intout
contrl+12	contrl[6]	handle
ptsin	ptsin[0]	x
ptsin+2	ptsin[1]	y
intout	intout[0]	phys_ix
intout+2	intout[1]	vdi_ix

7.12.5 vq_pixrgb

Name:

»Inquire pixel colour representation« - Obtain the RGB intensities of a pixel.

Opcode:

Syntax:

void vq_pixrgb ( int16_t handle, int16_t x, int16_t y, int16_t *rgb );

Description:

The call vq_pixrgb obtains the RGB colour intensities of the pixel at the given coordinates. The following apply:

Parameter	Meaning

handle	Workstation identifier
x	X-coordinate
y	Y-coordinate
rgb[0]	Red colour intensity (in tenths of a percent, 0-1000)
rgb[1]	Green colour intensity (in tenths of a percent, 0-1000)
rgb[2]	Blue colour intensity (in tenths of a percent, 0-1000)

Return value:

The function does not return a result.

Availability:

Available only with MATRIX drivers in TC mode.

Group:

TC-VDI functions

See also:

Binding vs_pixrgb

7.12.6 Bindings for vq_pixrgb

void vq_pixrgb ( int16_t handle, int16_t x, int16t_y, int16_t *rgb );

Binding:

void vq_pixrgb (int16_t handle, int16_t x, int16_t y, int16_t *rgb)
{
   ptsin[0] = x;
   ptsin[1] = y;

   contrl[0] = 60;
   contrl[1] = 1;
   contrl[3] = 0;
   contrl[6] = handle;

   vdi ();

   rgb[0] = intout[0];
   rgb[1] = intout[1];
   rgb[2] = intout[2];
}

GEM-Arrays:

Address	Element	Contents
contrl	contrl[0]	60 # Function Opcode
contrl+2	contrl[1]	1 # Entry in ptsin
contrl+4	contrl[2]	0 # Entry in ptsout
contrl+6	contrl[3]	0 # Entry in intin
contrl+8	contrl[4]	3 # Entry in intout
contrl+12	contrl[6]	handle
ptsin	ptsin[0]	x
ptsin+2	ptsin[1]	y
intout	intout[0..2]	rgb[0..2]

7.12.7 vrf_rgb

Name:

»Inquire fill colour representation« - Obtain the RGB intensities for the colour with which a 2-dimensional graphic object is filled.

Opcode:

Syntax:

void vrf_rgb ( int16_t handle, int16_t *rgb );

Description:

The call vrf_rgb obtains the RGB colour intensities of the fill colour of 2-dimensional graphic object. The following apply:

Parameter	Meaning

handle	Workstation identifier
rgb[0]	Red colour intensity (in tenths of a percent, 0-1000)
rgb[1]	Green colour intensity (in tenths of a percent, 0-1000)
rgb[2]	Blue colour intensity (in tenths of a percent, 0-1000)

Return value:

The function does not return a result.

Availability:

Available only with MATRIX drivers in TC mode.

Group:

TC-VDI functions

See also:

Binding vrl_rgb vrt_rgb vsf_rgb vsl_rgb vst_rgb

7.12.8 Bindings for vrf_rgb

void vrf_rgb ( int16_t handle, int16_t *rgb );

Binding:

void vrf_rgb (int16_t handle, int16_t *rgb)
{
   contrl[0] = 54;
   contrl[1] = 0;
   contrl[3] = 0;
   contrl[6] = handle;

   vdi ();

   rgb[0] = intout[0];
   rgb[1] = intout[1];
   rgb[2] = intout[2];
}

GEM-Arrays:

Address	Element	Contents
contrl	contrl[0]	54 # Function Opcode
contrl+2	contrl[1]	0 # Entry in ptsin
contrl+4	contrl[2]	0 # Entry in ptsout
contrl+6	contrl[3]	0 # Entry in intin
contrl+8	contrl[4]	3 # Entry in intout
contrl+12	contrl[6]	handle
intout	intout[0..2]	rgb[0..2]

7.12.9 vrl_rgb

Name:

»Inquire polyline colour representation« - Obtain the RGB intensities for the line colour.

Opcode:

Syntax:

void vrl_rgb ( int16_t handle, int16_t *rgb );

Description:

The call vrl_rgb obtains the RGB colour intensities of the line colour. The following apply:

Parameter	Meaning

handle	Workstation identifier
rgb[0]	Red colour intensity (in tenths of a percent, 0-1000)
rgb[1]	Green colour intensity (in tenths of a percent, 0-1000)
rgb[2]	Blue colour intensity (in tenths of a percent, 0-1000)

Return value:

The function does not return a result.

Availability:

Available only with MATRIX drivers in TC mode.

Group:

TC-VDI functions

See also:

Binding vrf_rgb vrt_rgb vsf_rgb vsl_rgb vst_rgb

7.12.10 Bindings for vrl_rgb

void vrl_rgb ( int16_t handle, int16_t *rgb );

Binding:

void vrl_rgb (int16_t handle, int16_t *rgb)
{
   contrl[0] = 56;
   contrl[1] = 0;
   contrl[3] = 0;
   contrl[6] = handle;

   vdi ();

   rgb[0] = intout[0];
   rgb[1] = intout[1];
   rgb[2] = intout[2];
}

GEM-Arrays:

Address	Element	Contents
contrl	contrl[0]	56 # Function Opcode
contrl+2	contrl[1]	0 # Entry in ptsin
contrl+4	contrl[2]	0 # Entry in ptsout
contrl+6	contrl[3]	0 # Entry in intin
contrl+8	contrl[4]	3 # Entry in intout
contrl+12	contrl[6]	handle
intout	intout[0..2]	rgb[0..2]

7.12.11 vrt_rgb

Name:

»Inquire graphic text colour representation« - Obtain the RGB intensities of the text output.

Opcode:

Syntax:

void vrt_rgb ( int16_t handle, int16_t *rgb );

Description:

The call vrt_rgb obtains the RGB colour intensities of the graphic text output. The following apply:

Parameter	Meaning

handle	Workstation identifier
rgb[0]	Red colour intensity (in tenths of a percent, 0-1000)
rgb[1]	Green colour intensity (in tenths of a percent, 0-1000)
rgb[2]	Blue colour intensity (in tenths of a percent, 0-1000)

Return value:

The function does not return a result.

Availability:

Available only with MATRIX drivers in TC mode.

Group:

TC-VDI functions

See also:

Binding vrf_rgb vrl_rgb vsf_rgb vsl_rgb vst_rgb

7.12.12 Bindings for vrt_rgb

void vrt_rgb ( int16_t handle, int16_t *rgb );

Binding:

void vrt_rgb (int16_t handle, int16_t *rgb)
{
   contrl[0] = 55;
   contrl[1] = 0;
   contrl[3] = 0;
   contrl[6] = handle;

   vdi ();

   rgb[0] = intout[0];
   rgb[1] = intout[1];
   rgb[2] = intout[2];
}

GEM-Arrays:

Address	Element	Contents
contrl	contrl[0]	55 # Function Opcode
contrl+2	contrl[1]	0 # Entry in ptsin
contrl+4	contrl[2]	0 # Entry in ptsout
contrl+6	contrl[3]	0 # Entry in intin
contrl+8	contrl[4]	3 # Entry in intout
contrl+12	contrl[6]	handle
intout	intout[0..2]	rgb[0..2]

7.12.13 vrun_parallel

Name:

»Parallelogram color run« - Parallelogram colour run.

Opcode:

Syntax:

void vrun_parallel ( int16_t handle, int16_t *pts, int16_t *rgbs );

Description:

To define the parallelogram only three points are required. The following apply:

Parameter	Meaning

handle	Workstation identifier
pts[0]	X-coordinate, and
pts[1]	Y-coordinate of a parallelogram corner point
pts[2]	X-coordinate, and
pts[3]	Y-coordinate of a second corner point
pts[4]	X-coordinate, and
pts[5]	Y-coordinate of a third corner point
rgbs	RGB values, one for each corner

Return value:

The function does not return a result.

Availability:

Available only with MATRIX drivers in TC mode.

Group:

TC-VDI functions

See also:

Binding vrun_rect vrun_triangle

7.12.14 Bindings for vrun_parallel

void vrun_parallel ( int16_t handle, int16_t *pts, int16_t *rgbs );

Binding:

void vrun_parallel (int16_t handle, int16_t *pts, int16_t *rgbs)
{
   ptsin[0..5] = pts[0..5];

   intin[0..11] = rgbs[0..11];

   contrl[0] = 62;
   contrl[1] = 3;
   contrl[3] = 12;
   contrl[6] = handle;

   vdi ();
}

GEM-Arrays:

Address	Element	Contents
contrl	contrl[0]	62 # Function Opcode
contrl+2	contrl[1]	3 # entry in ptsin
contrl+4	contrl[2]	0 # entry in ptsout
contrl+6	contrl[3]	12 # entry in intin
contrl+8	contrl[4]	0 # entry in intout
contrl+12	contrl[6]	handle
intin	intin[0..11]	rgbs[0..11]
ptsin	ptsin[0..5]	pts[0..5]

7.12.15 vrun_rect

Name:

»Rectangle color run« - Rectangle colour run.

Opcode:

Syntax:

void vrun_rect ( int16_t handle, int16_t *pts, int16_t *rgbs );

Description:

The following apply:

Parameter	Meaning

handle	Workstation identifier
pts[0]	X-coordinate, and
pts[1]	Y-coordinate of a rectangle corner point
pts[2]	X-coordinate, and
pts[3]	Y-coordinate of the diagonally opposite corner point
rgbs	RGB values, one for each corner

Return value:

The function does not return a result.

Availability:

Available only with MATRIX drivers in TC mode.

Group:

TC-VDI functions

See also:

Binding vrun_parallel vrun_triangle

7.12.16 Bindings for vrun_rect

void vrun_rect ( int16_t handle, int16_t *pts, int16_t *rgbs );

Binding:

void vrun_rect (int16_t handle, int16_t *pts, int16_t *rgbs)
{
   ptsin[0..3] = pts[0..3];

   intin[0..11] = rgbs[0..11];

   contrl[0] = 61;
   contrl[1] = 2;
   contrl[3] = 12;
   contrl[6] = handle;

   vdi ();
}

GEM-Arrays:

Address	Element	Contents
contrl	contrl[0]	61 # Function Opcode
contrl+2	contrl[1]	2 # entry in ptsin
contrl+4	contrl[2]	0 # entry in ptsout
contrl+6	contrl[3]	12 # entry in intin
contrl+8	contrl[4]	0 # entry in intout
contrl+12	contrl[6]	handle
intin	intin[0..11]	rgbs[0..11]
ptsin	ptsin[0..3]	pts[0..3]

7.12.17 vrun_triangle

Name:

»Triangle color run« - Triangle colour run.

Opcode:

Syntax:

void vrun_triangle ( int16_t handle, int16_t *pts, int16_t *rgbs );

Description:

The following apply:

Parameter	Meaning

handle	Workstation identifier
pts[0]	X-coordinate, and
pts[1]	Y-coordinate of a triangle corner point
pts[2]	X-coordinate, and
pts[3]	Y-coordinate of the second corner point
pts[4]	X-coordinate, and
pts[5]	Y-coordinate of the third corner point
rgbs	RGB values, one for each corner point

Return value:

The function does not return a result.

Availability:

Available only with MATRIX drivers in TC mode.

Group:

TC-VDI functions

See also:

Binding vrun_parallel vrun_rect

7.12.18 Bindings for vrun_triangle

void vrun_triangle ( int16_t handle, int16_t *pts, int16_t *rgbs );

Binding:

void vrun_triangle (int16_t handle, int16_t *pts, int16_t *rgbs)
{
   ptsin[0..5] = pts[0..5];

   intin[0..8] = rgbs[0..8];

   contrl[0] = 63;
   contrl[1] = 3;
   contrl[3] = 9;
   contrl[6] = handle;

   vdi ();
}

GEM-Arrays:

Address	Element	Contents
contrl	contrl[0]	63 # Function Opcode
contrl+2	contrl[1]	3 # entry in ptsin
contrl+4	contrl[2]	0 # entry in ptsout
contrl+6	contrl[3]	9 # entry in intin
contrl+8	contrl[4]	0 # entry in intout
contrl+12	contrl[6]	handle
intin	intin[0..8]	rgbs[0..8]
ptsin	ptsin[0..5]	pts[0..5]

7.12.19 vs_colors

Name:	»Set colors« - Set the RGB value of a colour.
Opcode:	64
Syntax:	void vs_colors ( int16_t handle, int16_t from, int16_t to, int16_t *rgb_table );
Description:	The call vs_colors sets the RGB values of the palette starting from the palette index from to the palette index to. The colour values are stored in rgb_table.
Return value:	The function does not return a result.
Availability:	Available only with MATRIX drivers in TC mode.
Group:	TC-VDI functions
See also:	Binding vq_colors

7.12.20 Bindings for vs_colors

void vs_colors ( int16_t handle, int16_t from, int16_t to, int16_t *rgb_table );

Binding:

void vs_colors (int16_t handle, int16_t from, int16_t to, int16_t *rgb_table)
{
   intin[0]    = from;
   intin[1]    = to;
   intin[2..3] = rgb_table;

   contrl[0] = 64;
   contrl[1] = 0;
   contrl[3] = 4;
   contrl[6] = handle;

   vdi ();
}

GEM-Arrays:

Address	Element	Contents
contrl	contrl[0]	64 # Function Opcode
contrl+2	contrl[1]	0 # entry in ptsin
contrl+4	contrl[2]	0 # entry in ptsout
contrl+6	contrl[3]	4 # entry in intin
contrl+8	contrl[4]	0 # entry in intout
contrl+12	contrl[6]	handle
intin	intin[0]	from
intin+2	intin[1]	to
intin+4	intin[2..3]	rgb_table

7.12.21 vs_pixcol

Name:

»Set pixel colour index« - Set the colour index of a pixel.

Opcode:

Syntax:

void vs_pixcol ( int16_t handle, int16_t x, int16_t y, int16_t vdi_ix );

Description:

The call vs_pixcol sets the VDI colour index for the pixel at the given coordinates.

Parameter	Meaning

handle	Workstation identifier
x	X-coordinate
y	Y-coordinate
vdi_ix	Requested VDI color index

Return value:

The function does not return a result.

Availability:

Available only with MATRIX drivers in TC mode.

Group:

TC-VDI functions

See also:

Binding vq_pixcol

7.12.22 Bindings for vs_pixcol

void vs_pixcol ( int16_t handle, int16_t x, int16_t y, int16_t vdi_ix );

Binding:

void vs_pixcol (int16_t handle, int16_t x, int16_t y, int16_t vdi_ix)
{
   ptsin[0] = x;
   ptsin[1] = y;

   intin[0] = vdi_ix;

   contrl[0] = 57;
   contrl[1] = 1;
   contrl[3] = 1;
   contrl[6] = handle;

   vdi ();
}

GEM-Arrays:

Address	Element	Contents
contrl	contrl[0]	57 # Function Opcode
contrl+2	contrl[1]	1 # entry in ptsin
contrl+4	contrl[2]	0 # entry in ptsout
contrl+6	contrl[3]	1 # entry in intin
contrl+8	contrl[4]	0 # entry in intout
contrl+12	contrl[6]	handle
intin	intin[0]	vdi_ix
ptsin	ptsin[0]	x
ptsin+2	ptsin[1]	y

7.12.23 vs_pixrgb

Name:

»Set pixel RGB colour values« - Set the colour of a pixel.

Opcode:

Syntax:

void vs_pixrgb ( int16_t handle, int16_t x, int16_t y, int16_t *rgb );

Description:

The call vs_pixrgb sets the RGB colour for the pixel at the given coordinates.

Parameter	Meaning

handle	Workstation identifier
x	X-coordinate
y	Y-coordinate
rgb	Requested pixel RGB color values

Return value:

The function does not return a result.

Availability:

Available only with MATRIX drivers in TC mode.

Group:

TC-VDI functions

See also:

Binding vq_pixrgb

7.12.24 Bindings for vs_pixrgb

void vs_pixrgb ( int16_t handle, int16_t x, int16_t y, int16_t *rgb );

Binding:

void vs_pixrgb (int16_t handle, int16_t x, int16_t y, int16_t *rgb)
{
   ptsin[0] = x;
   ptsin[1] = y;

   intin[0] = *rgb++;
   intin[1] = *rgb++;
   intin[2] = *rgb;

   contrl[0] = 59;
   contrl[1] = 1;
   contrl[3] = 3;
   contrl[6] = handle;

   vdi ();
}

GEM-Arrays:

Address	Element	Contents
contrl	contrl[0]	59 # Function Opcode
contrl+2	contrl[1]	1 # entry in ptsin
contrl+4	contrl[2]	0 # entry in ptsout
contrl+6	contrl[3]	3 # entry in intin
contrl+8	contrl[4]	0 # entry in intout
contrl+12	contrl[6]	handle
intin	intin[0]	rgb[0]
intin+2	intin[1]	rgb[1]
intin+4	intin[2]	rgb[2]
ptsin	ptsin[0]	x
ptsin+2	ptsin[1]	y

7.12.25 vsf_rgb

Name:

»Set fill RGB colour values« - Set the colour with which a 2-dimensional graphic object is to be filled.

Opcode:

Syntax:

void vsf_rgb ( int16_t handle, int16_t *rgb );

Description:

The call vsf_rgb sets the fill RGB colour for 2-dimensional graphic objects.

Parameter	Meaning

handle	Workstation identifier
rgb	Requested fill RGB color values

Return value:

The function does not return a result.

Availability:

Available only with MATRIX drivers in TC mode.

Group:

TC-VDI functions

See also:

Binding vrf_rgb vrl_rgb vrt_rgb vsl_rgb vst_rgb

7.12.26 Bindings for vsf_rgb

void vsf_rgb ( int16_t handle, int16_t *rgb );

Binding:

void vsf_rgb (int16_t handle, int16_t *rgb)
{
   intin[0] = *rgb++;
   intin[1] = *rgb++;
   intin[2] = *rgb;

   contrl[0] = 51;
   contrl[1] = 0;
   contrl[3] = 3;
   contrl[6] = handle;

   vdi ();
}

GEM-Arrays:

Address	Element	Contents
contrl	contrl[0]	51 # Function Opcode
contrl+2	contrl[1]	0 # entry in ptsin
contrl+4	contrl[2]	0 # entry in ptsout
contrl+6	contrl[3]	3 # entry in intin
contrl+8	contrl[4]	0 # entry in intout
contrl+12	contrl[6]	handle
intin	intin[0]	rgb[0]
intin+2	intin[1]	rgb[1]
intin+4	intin[2]	rgb[2]

7.12.27 vsl_rgb

Name:

»Set polyline RGB colour values« - Set the line colour.

Opcode:

Syntax:

void vsl_rgb ( int16_t handle, int16_t *rgb );

Description:

The call vsl_rgb sets the RGB colour for lines.

Parameter	Meaning

handle	Workstation identifier
rgb	Requested line RGB color values

Return value:

The function does not return a result.

Availability:

Available only with MATRIX drivers in TC mode.

Group:

TC-VDI functions

See also:

Binding vrf_rgb vrl_rgb vrt_rgb vsf_rgb vst_rgb

7.12.28 Bindings for vsl_rgb

void vsl_rgb ( int16_t handle, int16_t *rgb );

Binding:

void vsl_rgb (int16_t handle, int16_t *rgb)
{
   intin[0] = *rgb++;
   intin[1] = *rgb++;
   intin[2] = *rgb;

   contrl[0] = 53;
   contrl[1] = 0;
   contrl[3] = 3;
   contrl[6] = handle;

   vdi ();
}

GEM-Arrays:

Address	Element	Contents
contrl	contrl[0]	53 # Function Opcode
contrl+2	contrl[1]	0 # entry in ptsin
contrl+4	contrl[2]	0 # entry in ptsout
contrl+6	contrl[3]	3 # entry in intin
contrl+8	contrl[4]	0 # entry in intout
contrl+12	contrl[6]	handle
intin	intin[0]	rgb[0]
intin+2	intin[1]	rgb[1]
intin+4	intin[2]	rgb[2]

7.12.29 vst_rgb

Name:

»Set graphic text RGB colour values« - Set the colour of the text output.

Opcode:

Syntax:

void vst_rgb ( int16_t handle, int16_t *rgb );

Description:

The call vst_rgb sets the RGB colour values for subsequent graphic text operations.

Parameter	Meaning

handle	Workstation identifier
rgb	Requested text RGB color values

Return value:

The function does not return a result.

Availability:

Available only with MATRIX drivers in TC mode.

Group:

TC-VDI functions

See also:

Binding vrf_rgb vrl_rgb vrt_rgb vsf_rgb vsl_rgb

7.12.30 Bindings for vst_rgb

void vst_rgb ( int16_t handle, int16_t *rgb );

Binding:

void vst_rgb (int16_t handle, int16_t *rgb)
{
   intin[0] = *rgb++;
   intin[1] = *rgb++;
   intin[2] = *rgb;

   contrl[0] = 52;
   contrl[1] = 0;
   contrl[3] = 3;
   contrl[6] = handle;

   vdi ();
}

GEM-Arrays:

Address	Element	Contents
contrl	contrl[0]	52 # Function Opcode
contrl+2	contrl[1]	0 # entry in ptsin
contrl+4	contrl[2]	0 # entry in ptsout
contrl+6	contrl[3]	3 # entry in intin
contrl+8	contrl[4]	0 # entry in intout
contrl+12	contrl[6]	handle
intin	intin[0]	rgb[0]
intin+2	intin[1]	rgb[1]
intin+4	intin[2]	rgb[2]

VDI

Raster functions

VDI functions list